Aion-2.0 is 12.5× cheaper per million tokens (blended). Claude Opus 5 has the larger context window (1,000,000 vs 131,072 tokens, 7.6×).
Aion-2.0 vs Claude Opus 5
Live catalog fields. Best-in-row is highlighted.
Aion-2.0
Aion Labs · aion-labs__aion-2.0
Claude Opus 5
Anthropic · anthropic__claude-opus-5
Identity
| Field | aion-labs__aion-2.0 | anthropic__claude-opus-5 |
|---|---|---|
| Provider | Aion Labs | Anthropic |
| Slug | aion-labs__aion-2.0 | anthropic__claude-opus-5 |
| Status | live | live |
| Open weights | No | No |
| License | — | — |
| HuggingFace | — | — |
Quality
| Field | aion-labs__aion-2.0 | anthropic__claude-opus-5 |
|---|---|---|
| Quality index (0–100) | — | 93.4 |
Cost
| Field | aion-labs__aion-2.0 | anthropic__claude-opus-5 |
|---|---|---|
| Input $ / 1M tokens | $0.80 | $5.00 |
| Cached input $ / 1M | $0.20 | $0.50 |
| Output $ / 1M tokens | $1.60 | $25.00 |
Context
| Field | aion-labs__aion-2.0 | anthropic__claude-opus-5 |
|---|---|---|
| Max context tokens | 131,072 | 1,000,000 |
| Max output tokens | 32,768 | 128,000 |
Modalities
| Field | aion-labs__aion-2.0 | anthropic__claude-opus-5 |
|---|---|---|
| Input | text | text, image, file |
| Output | text | text |